overview for axzxc1236

The Wireguard config generated by router only contains IPv4 address (10.0.5.x), and while testing the VPN to my surprise "what is my ip" websites can find my IPv6 address (I USB tethered mobile connection to my laptop).

It looks like NetworkManager does nothing about IPv6 connection if VPN doesn't have IPv6 settings, which is bad for road warrior type of VPN configuration.

Is there an easy toggle to turn of IPv6 if VPN is connected and otherwise? Or is only option to disable all IPv6 no matter what?

How do you use only ipv6 server? in c/selfhosted@lemmy.world

[–] axzxc1236@lemm.ee 2 points 1 month ago

You setup Wireguard server on the VPS with both IPv4 and IPv6. Then you connect both your computer and IPv6-only server to the Wireguard server. After connection, you can connect to the VPN through IP address assigned by wireguard.

How do you use only ipv6 server? in c/selfhosted@lemmy.world

[–] axzxc1236@lemm.ee 2 points 1 month ago* (last edited 1 month ago) (2 children)

Personally have good experience with https://github.com/Nyr/wireguard-install, there are other script that are available by searching "wireguard setup script github".

Note: By default Wireguard config generated will route every bit of traffic through Wireguard (which will be slower and probably not wanted in this situation), to change that change AllowedIPs field in Wireguard config, lets say all your machines are assigned 1.2.3.xxx as IP address, to only access other 1.2.3.xxx IP through wireguard, change the config to AllowedIPs = 1.2.3.0/24.

How do you use only ipv6 server? in c/selfhosted@lemmy.world

[–] axzxc1236@lemm.ee 3 points 1 month ago* (last edited 1 month ago) (4 children)

Host a website that needs to be accessible from your own machine or public?

Former situation: Can be solved by setup reverse proxy on the other VPS, or join machines to a VPN server (like tailscale,, Zertoier or Wireguard server)

Later situation: Cloudflare or other CDN, setup reverse proxy on the other VPS.

Less accessible option but available for public: Tor or I2P

How do you use only ipv6 server? in c/selfhosted@lemmy.world

[–] axzxc1236@lemm.ee 3 points 1 month ago (6 children)

Great, if you need to SSH into Ipv6 only machine, SSH has -J flag which can be used to specify "jump host" (basically run SSH through SSH)

What prevents Linux from being installed on mobile devices? in c/nostupidquestions@lemmy.world

[–] axzxc1236@lemm.ee 10 points 1 month ago* (last edited 1 month ago) (1 children)

Pratically no universal way of making Linux boot with ARM processors.

Much more closed source drivers (than x86 ecosystem).

Cheap, OpenWrt compatible routers with WiFi 6? in c/selfhosted@lemmy.world

[–] axzxc1236@lemm.ee 3 points 4 months ago

I think that means the access point can only run at up to 80Mhz bandwidth, so not full bandwidth.

Today I'm grateful I'm using Linux - Global IT issues caused by Crowdstrike update causes BSOD on Windows in c/linux@lemmy.ml

[–] axzxc1236@lemm.ee 36 points 4 months ago* (last edited 4 months ago) (12 children)

I am born too late to understand what Y2K problem was, this (the result) might be what people thought could happen.

5

I encountered a case where using cprofile actually speeds up my code, did anyone else encountered this before? (lemm.ee)

submitted 1 year ago* (last edited 1 year ago) by axzxc1236@lemm.ee to c/python@programming.dev

0 comments fedilink

I can't give you the code because this is work related, and I couldn't make a minimal code that mimics the behavior.

My of my programs at work is a log parser, it reads syslog and use compiled regex pattern to match syslog, the whole program looks like this

If match := pattern.match(line):
  Do this
elif match := pattern2.match(line):
  Do that
…

During almost two years of me developing the programs, there are more patterns and more things to do and it gets slower.

But I recently figure out that if I commented out Do that and replace it with pass, my program speeds up, even if pattern2 never matches in my test case.

More strange thing is that in my attempts to use cProfile to profile things, my program runs 2.5x to 3x faster by just doing

from cProfile import Profile
with Profile() as profile:
  main()

I don't even call anything with profile variable and it speeds up my program, why is that?

34

Is there a proper way to offload video workload to iGPU/APU? (lemm.ee)

submitted 1 year ago* (last edited 1 year ago) by axzxc1236@lemm.ee to c/linux@lemmy.ml

15 comments fedilink

Background story: I recently bought a computer with AMD 7000 series CPU and GPU.

amdgpu_top reports 15 ~ 20 watts in normal desktop usage, but as soon as I have video playing in VLC, it goes to 45 watts constantly which is undesirable behavior especially in summer. (I hope that is just reporting issue... but my computer is hot)

When I do DRI_PRIME=1 vlc and then play videos, amdgpu_top doesn't report the power surge. (I have iGPU enabled)

Is there anything more convenient then modifying individual .desktop files? KDE malfunctions when I put export DRI_PRIME=1 in .xprofile so that's a no go.

Solved: removing mesa related hardware acceleration package makes VLC fall back to libplacebo which doesn't do these weird things.